Damage to a seawall during high-surf conditions prompted the evacuations of about 20 homes in Long Beach on Monday, Sept 7.

High tides and waves pounded beachfront properties on Seaside Walk, from 63rd Place to 67th Place, with reports of cracked concrete suggesting possible foundation damage at some of the residences, Long Beach Fire Department officials said in a bulletin.

Authorities asked residents in the area to leave out of an abundance of caution as building department officials assess the structural integrity of affected homes.

A rainbow spans the horizon of waterlogged Ocean Blvd. in...

A rainbow spans the horizon of waterlogged Ocean Blvd. in Long Beach on Sunday, September 6, 2026. (Photo by Mindy Schauer, Orange County Register/SCNG)

Waves pound a small retaining wall during high tide as...

Waves pound a small retaining wall during high tide as a lifeguard keeps watch near Ocean Blvd. and 67th Place in Long Beach on Sunday, September 6, 2026. (Photo by Mindy Schauer, Orange County Register/SCNG)

Waves pound a small retaining wall during high tide as...

Waves pound a small retaining wall during high tide as a lifeguard keeps watch near Ocean Blvd. and 67th Place in Long Beach on Sunday, September 6, 2026. (Photo by Mindy Schauer, Orange County Register/SCNG)

Pedestrians navigate across Ocean Blvd. at 67th Place in Long...

Pedestrians navigate across Ocean Blvd. at 67th Place in Long Beach, while the streets are flooded with about two feet of water during high tide on Sunday, September 6, 2026.(Photo by Mindy Schauer, Orange County Register/SCNG)

A wave crashes up and over a small retaining wall...

A wave crashes up and over a small retaining wall on Sunday, September 6, 2026, near homes in Long Beach on the Peninsula near Belmont Shore during high tide. (Photo by Mindy Schauer, Orange County Register/SCNG)

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A rainbow spans the horizon of waterlogged Ocean Blvd. in Long Beach on Sunday, September 6, 2026. (Photo by Mindy Schauer, Orange County Register/SCNG)

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Those who were displaced were aided by city health and transit department officials.

Meanwhile, public works crews performed storm-mitigation efforts and volunteers distributed sandbags to those trying to keep ocean water from pooling in their homes.

Intense waves and flooding at the start of the week were fueled in part by the effects of Hurricane Marie.

Stormy conditions also caused the closure of the Junipero Beach parking-lot access roads to the Long Beach Peninsula, except for residents.

Conditions remained “dynamic, with a combination of high tides, storm surge, surf and swell,” as of Monday evening, LBFD officials said.